On 4/11/19 12:08 AM, David Hildenbrand wrote: > +static DisasJumpType op_vaccc(DisasContext *s, DisasOps *o) > +{ > + if (get_field(s->fields, m5) != ES_128) { > + gen_program_exception(s, PGM_SPECIFICATION); > + return DISAS_NORETURN; > + } > + > + gen_gvec_4_ool(get_field(s->fields, v1), get_field(s->fields, v2), > + get_field(s->fields, v3), get_field(s->fields, v4), 0, > + gen_helper_gvec_vaccc128); > + return DISAS_NEXT; > +}
An inline expansion could be One possible expansion is tcg_gen_andi_i64(tl, cl, 1); tcg_gen_add2_i64(tl, th, tl, zero, al, zero); tcg_gen_add2_i64(tl, th, tl, th, bl, zero); tcg_gen_add2_i64(tl, th, th, zero, ah, zero); tcg_gen_add2_i64(tl, th, tl, th, bl, zero); /* carry out in th */ This is 8 insns for the addition vs the hw optimal 6, but we're not exactly an optimizing compiler either. ;-) r~